1994 Chevrolet Blazer Owner's Manual - Page 193

Run your engine only as long as you must. This saves fuel. When you run the engine, make it go a little faster than just idle. That is, push the accelerator slightly. This uses less fuel for the heat that you get and it keeps the battery charged. You will need a well-charged battery (or batteries) to restart the vehicle, and possibly for signaling later on withyour headlights. Let theheater run for awhile. Then, shut the engineoff and close the window almost all the wayto preserve the heat. Start the engine again and repeat this only when you feel really uncomfortable from the cold. But do it as little as possible. Preserve the fuel as long as you can. To help keep warm, you can get out of the vehicle and do somefairly vigorous exercises every half hour or so until help comes. Recreational VehicleTowing (Four-wheel Drive Only) If your vehicle has 4-wheel drive, you may tow it behind another vehicle providing it does not have the optional electronic shift transfer case. Recreational vehicle towingis not recommendedfor vehicles with the optional electronic shift transfer case because the electronic shift has no neutral position. 4-35